I searched MA and NH last month for 22 LR for a group of Scouts, everyone is out of stock and when they get any in, its gone in an hour. I finally found some at Belmont Firearms Range, while he doesn't generally sell ammo, he was willing to help out the Scouts! He needs to keep ammo in stock for his range use.
Since, I have found it's just easier to order mail-order and not have to run around to multiple stores trying to find ammo...
https://alamoammo.com/rifle-ammo/22-long-rifle